Yoidesu Yoidesu4ton9sp1u5-11
Yoidesu Portable AM FM Radio with Bluetooth Speaker User Manual
Model: Yoidesu4ton9sp1u5-11
1. Introduction
Thank you for purchasing the Yoidesu Portable AM FM Radio with Bluetooth Speaker. This device offers versatile audio entertainment with AM, FM, and Shortwave radio reception, Bluetooth connectivity, and playback from USB drives and storage cards. Its retro design and dual power options make it suitable for various environments, from home use to outdoor activities. Please read this manual carefully to ensure proper operation and maintenance of your device.
2. Safety Information
- Do not expose the unit to rain or moisture to prevent fire or electric shock.
- Do not open the casing. Refer all servicing to qualified personnel.
- Use only the specified power adapter or batteries.
- Avoid placing the unit near heat sources or in direct sunlight for extended periods.
- Keep out of reach of children.
- Remove batteries if the unit will not be used for a long time.
3. Package Contents
Please check that all items are present:
- 1 x Yoidesu Portable Radio
- 1 x User Manual (this document)
- 1 x Carrying Strap
- 1 x AC Power Cord (US Plug)

Image: The Yoidesu Portable Radio shown with its included AC power cord and carrying strap, illustrating the complete package contents.
4. Product Overview
Familiarize yourself with the various parts and controls of your radio.

Image: Front view of the Yoidesu Portable Radio, displaying the main speaker grille, tuning dial, volume knob, and extended telescopic antenna.
Front Panel Controls:
- Tuning Knob: Adjusts radio frequency.
- Volume Knob: Controls audio output level and power ON/OFF.
- Band Selector Switch: Selects between FM, SW, and AM radio bands.
- Frequency Dial: Displays the current radio frequency.

Image: A close-up view of the tuning and volume knobs on the Yoidesu Portable Radio, highlighting their positions and labels.
Side Panel Ports & Controls:
- AUX IN: 3.5mm audio input for external devices.
- PHONES: 3.5mm headphone jack.
- DC 12.5V Input: Power input for AC adapter.
- USB Port: For USB drive playback.
- TF Card Slot: For storage card playback.

Image: Side view of the Yoidesu Portable Radio, detailing the AUX IN, PHONES, and DC 12.5V input ports.

Image: An angled view of the Yoidesu Portable Radio, clearly showing the USB port and TF (MicroSD) card slot for media playback.
5. Setup
5.1 Power Supply
The radio can be powered by two methods:
- AC Power: Connect the provided AC power cord to the DC 12.5V input port on the side of the radio, then plug the other end into a standard US wall outlet.
- Battery Power: For portable use, insert two (2) D-size batteries (not included) into the battery compartment located on the back of the unit. Ensure correct polarity (+/-).
5.2 Antenna Adjustment
For optimal radio reception, extend the telescopic antenna fully. For FM and SW bands, adjust the angle and direction of the antenna to achieve the clearest signal. For AM reception, the internal antenna is generally sufficient, but rotating the entire unit may improve signal strength.
6. Operating Instructions
6.1 Turning On/Off and Volume Control
Rotate the Volume Knob clockwise to turn the radio ON. Continue rotating to increase the volume. Rotate counter-clockwise to decrease the volume and turn the radio OFF.
6.2 Radio Operation (AM/FM/SW)
- Turn on the radio using the Volume Knob.
- Select the desired band (FM, SW, or AM) using the Band Selector Switch.
- Slowly rotate the Tuning Knob to scan for radio stations. The frequency will be indicated on the frequency dial.
- Adjust the telescopic antenna for best reception, especially for FM and SW.

Image: The Yoidesu Portable Radio with its frequency dial clearly showing the ranges for FM (87-108MHz), AM (530-1600KHz), and SW (8-16MHz).
6.3 Bluetooth Speaker Operation
- Turn on the radio.
- Switch the mode to Bluetooth (usually indicated by a specific position on the band selector or a dedicated mode button, refer to specific unit markings if available). The radio will enter pairing mode, often indicated by an audible prompt or flashing light.
- On your mobile device, enable Bluetooth and search for available devices.
- Select "Yoidesu Radio" (or similar name) from the list to pair.
- Once paired, you can play audio from your device through the radio's speaker.

Image: The Yoidesu Portable Radio shown playing music via Bluetooth from a smartphone, demonstrating its wireless audio streaming capability.
6.4 USB Drive and Storage Card Playback
- Insert a USB drive into the USB port or a TF (MicroSD) card into the TF card slot.
- The radio should automatically switch to USB/TF playback mode or you may need to select it using a mode button.
- Use the playback control buttons (if available, e.g., Play/Pause, Next, Previous) to manage your music.

Image: The Yoidesu Portable Radio in an outdoor setting, illustrating its ability to play music directly from a USB drive or storage card.
7. Maintenance
- Cleaning: Wipe the radio with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the radio in a cool, dry place away from direct sunlight and extreme temperatures. Remove batteries if storing for extended periods.
- Antenna Care: Handle the telescopic antenna gently to prevent bending or breaking.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Batteries are dead or incorrectly inserted; AC cord not properly connected. | Replace batteries or check polarity. Ensure AC cord is securely plugged in. |
| Poor radio reception | Antenna not extended; weak signal area; interference. | Extend and adjust the telescopic antenna. Try moving the radio to a different location. |
| Bluetooth not connecting | Radio not in Bluetooth mode; device too far; previously paired with another device. | Ensure radio is in Bluetooth mode. Keep devices within range. Disconnect from other devices. |
| USB/TF card not playing | Card/drive not inserted correctly; unsupported file format; corrupted files. | Reinsert the card/drive. Ensure files are in a supported format (e.g., MP3). Try a different card/drive. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | Yoidesu |
| Model Number | Yoidesu4ton9sp1u5-11 |
| FM Frequency Range | 87-108 MHz |
| AM Frequency Range | 530-1600 KHz |
| SW Frequency Range | 8-16 MHz |
| Bluetooth Version | 5.0 |
| Power Supply | AC Direct Plug-in (US Plug) / 2 x D Batteries (not included) |
| Storage Card Support | Up to 32GB (TF/MicroSD, not included) |
| Product Dimensions | 6.69 x 5.11 x 3.54 inches (17 x 13 x 9 cm) |
| Item Weight | 1.65 pounds (0.75 kg) |
| Material | ABS |
10. Warranty and Support
This product comes with a standard manufacturer's warranty. For detailed warranty information, please refer to the warranty card included with your purchase or contact Yoidesu customer support. If you encounter any issues or have questions not covered in this manual, please contact our support team via the contact information provided on the product packaging or the official Yoidesu website.
For further assistance, please visit the Yoidesu Store on Amazon.
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